HVAC-R Experimental Equipment
The air conditioning systems widely used in various industries, as well as for improving living standards, not only maintain comfort in daily life but also refer to the control of industrial process environments. The EC1550V is a device equipped with an HVAC-R air conditioning system that demonstrates the thermodynamic processes of heating and humidifying, cooling, and refrigeration within ducts. The portable experimental device, using R134a as the refrigerant and equipped with movable casters, draws air from the intake grille on the left side of the duct, passing through a manual opening and closing damper, a variable speed axial fan, a primary heater, a steam humidifier, a heat exchanger (water-cooled), a water sprayer, a mist eliminator, and a secondary heater, before being discharged from the exhaust grille on the right side of the duct. It digitally displays the temperature and humidity for each air conditioning process, the air velocity at one location within the duct, the refrigerant pressure (high and low), temperature, refrigerant flow rate, and the power consumption of the compressor. The chilled water tank, temperature-controlled by the refrigeration system, sends chilled water to the heat exchanger in the duct via a variable speed pump, and the inlet and outlet temperatures and flow rates of the heat exchanger are displayed digitally. The primary and secondary heaters, controlled by PID, can be compared in performance with different power inputs.
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basic information
EC1550V Specifications EC1550V Dimensions: Approximately W3500 x D750 x H1500mm EC1550V Weight: Approximately 400kg Power Supply: Three-phase AC200V 40A, 50/60Hz Duct Cross-section Dimensions: Approximately 300mm x 300mm Fan: Variable speed axial fan Air Volume Flow Rate: Maximum approximately 700m3/h Maximum Wind Speed: Over 2 m/s, digital display Wind Speed Sensor: 1 unit (measurable at positions No.1, 3, 4, 5, 9), VTQ thin-film wind speed sensor, measurement range 0-10m/s Primary Heater: 1.5kW electric heater (PID control) Secondary Heater: 1.5kW electric heater (PID control) Temperature and Humidity Measurement: 7 digital display temperature and humidity sensors Temperature Measurement: 10 thermocouples with digital display, heaters x2, water tank, heat exchanger inlet and outlet, humidification tank, compressor inlet, expansion valve inlet Humidifier: Electric heater (thermostat type) Water Sprayer: High-pressure spray nozzle type (60psi) Water Tank: Approximately 35L, PID temperature control by refrigeration system Noise Level: 70dB
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Applications/Examples of results
Main Experimental Content (Reference) Demonstration and analysis of air conditioning processes (specific enthalpy, relative humidity, dry bulb temperature) Investigation of the moist air line diagram process (sensible heat, steam humidification, cooling, sensible and latent heat cooling and dehumidification, adiabatic humidification by mist) Investigation of composite processes (heating and humidification, cooling and humidification, heating, humidification, and cooling) Investigation of the effects of air flow rate, pump flow rate, and temperature changes on air conditioning processes in various combinations Demonstration and analysis of the refrigeration cycle (adiabatic coefficient, performance coefficient, degree of subcooling, degree of superheating, mass flow rate, energy balance) Investigation of the P-h diagram (Mollier diagram) process Delivery Performance: Yonago National College of Technology, Fujisawa Technical High School
Detailed information
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VDAS software screen (device accessories) Experiment 6 Composite process experiment status screen
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VDAS software moist air psychrometric chart screen (reference diagram) Real-time display of state points (relative humidity and dry bulb temperature) on the chart.
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VDAS software P-h diagram screen (reference diagram) Real-time display of refrigerant states in the refrigeration cycle on the diagram.
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System overview diagram when adding EC1550a to EC1550V.
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System overview diagram when adding EC1550a and EC1550c to EC1550V.
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Company information
Megakemu designs, manufactures, and imports various experimental and practical equipment for universities, junior colleges, technical colleges, high schools, and vocational schools nationwide. While the world has made advancements in various fields, it seems that our Earth's environment is being disturbed by ourselves and is approaching its limits. The world is seeking new Japanese technologies that coexist with the Earth's environment.